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VPNVPN

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices o...

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Expert Spotlight
Network Architect and EE TA

Over 15 years' experience in enterprise network design and implementation focused on routing, switching, Wi-Fi and Cisco ISE.

Article
Artica Web Console

Manage Linux services easily

2
We all know that Linux is the best OS for network services like, web servers, dns, dhcp, proxy , firewall... but administrate those services in large scale operations by command line is a pain in the a** .
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VPN Comparison for Beginners

VPN Comparison for Beginners

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An honest and unbiased comparison of four popular VPN software solutions available. Includes security features offered, reliability, speed tests while connected to identical servers (where possible), additional features offered and subscription cost comparisons. Includes a FREE VPN service provider.
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A Beginners guide to VPN Software

A Beginners guide to VPN Software

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In part one of this two-part series, I'm going to explain in layman's terms what a VPN is, what it can and can't do for you, and how it works. In part two (coming soon), I will compare two or more popular VPN services and describe which one I believe is the best to go with.
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Why the Corona pandemic is also becoming an IT security challenge

Why the Corona pandemic is also becoming an IT security challenge

In this short article, I am trying to point out, what needs to be considered in order to stay secure, before trying to keep the company operable.
Article
Branch office Inter connectivity

Branch office inter-connectivity: A free and industrial VPN approach.

As a network administrator, you have been probably requested to propose a secure and stable solution for branch offices connectivity to your HQ building over VPN. You possibly have usage scenarios such as IP phone, Cameras, Database replication, and remote maintenance and support.
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Routing and Remote Access - Adding new interfaces

byQlemo
Starting with Windows 2012 change for network interfaces (adding, replacing, ...) requires to uninstall and reinstall RRAS to apply those changes - purging the current RRAS setup. The following script shows how to add new interfaces without having to reinstall RRAS.
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Scenario 10

IPsec VPN Configuration On Cisco IOS XE - Part 10 - Dual Hub Dual Cloud Phase 3 Dynamic Multipoint VPN (DMVPN)

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two CSR1000V hub routers configured with dual hub dual cloud Phase 3 DMVPN.
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Scenario 9

IPsec VPN Configuration On Cisco IOS XE - Part 9 - Dual Hub Phase 3 Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two CSR1000V hub routers configured with single tier Phase 3 DMVPN Cloud.
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Scenario 8

IPsec VPN Configuration On Cisco IOS XE - Part 8 - Single Tier Phase 3 Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two spoke routers connected to single tier Phase 3 DMVPN Cloud hosted on CSR1000V router.
Article
Scenario 7

IPsec VPN Configuration On Cisco IOS XE - Part 7 - Single Tier Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two spoke routers connected to single tier Phase 1 DMVPN Cloud hosted on CSR1000V router.
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Cradlepoint and Cisco - DMVPN with Certificate Based Authentication (Also, IOS CA, OSPF, and VRRP) -

Cradlepoint and Cisco - DMVPN with Certificate Based Authentication (Also, IOS CA, OSPF, and VRRP)

I had to tackle a challenge to use Cradlepoint routers to provide backup WAN connectivity for my remote sites. This is how I did it.
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Scenario 6

IPsec VPN Configuration On Cisco IOS XE - Part 6 - Route Based VPN With Redundant Routers in DC (HUB)

This article is about building a Route Based site to site VPN tunnels with Redundant Routers in DC (HUB) in Cisco CSR1000V router with IOS XE. There are four Route Based IPsec VPN tunnels configured on two CSR1000V routers as redundant routers pair.
Article
Scenario 5

IPsec VPN Configuration On Cisco IOS XE - Part 5 - Route Based VPN With VRF And Dynamic Routing (OSPF)

This article is about building a Route Based site to site VPN tunnels with VRF and dynamic routing protocol (OSPF) in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Scenario 4

IPsec VPN Configuration On Cisco IOS XE - Part 4 - Route Based VPN With Dynamic Routing (OSPF)

This article is about building a Route Based site to site VPN tunnels with dynamic routing protocol (OSPF) in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Remote Desktop Authentication Error -

Remote Desktop Authentication Error Has Occurred. The function requested is not supported. CredSSP

Remote Desktop Connections and VPN Connections Fail. Starting May 9, we received many reports of Remote Desktop connections failing globally. Users received error messages on authentication when they try to remote to machines or VPN. Here's the cause, symptoms and simple workaround.
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Scenario 3

IPsec VPN Configuration On Cisco IOS XE - Part 3 - Route Based VPN

This article is about building a Route Based site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Scenario 2

IPsec VPN Configuration On Cisco IOS XE - Part 2 - VRF-Aware Policy Based VPN

This article is about building a VRF-Aware site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two VRF-Aware Policy Based IPsec VPN tunnels configured on CSR1000V router one with NAT and another without NAT.
Article
Scenario 1

IPsec VPN Configuration On Cisco IOS XE - Part 1 - Policy Based VPN

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This article is about building a site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two Policy Based IPsec VPN tunnels configured on CSR1000V router one with NAT and another without NAT.
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With GDPR, a New Global Data Security Regulatory Cycle Begins

Will you be ready when the clock on GDPR compliance runs out? Is GDPR even something you need to worry about? Find out more about the upcoming regulation changes and download our comprehensive GDPR checklist today !
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5 Reasons Not to Buy SD-WANs

If you’re involved with your company’s wide area network (WAN), you’ve probably heard about SD-WANs.

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